@article {4783, title = {A dual-spectrometer approach to reflectance measurements under sub-optimal sky conditions}, volume = {20}, year = {2012}, month = {In press}, publisher = {The Optical Society (OSA)}, abstract = {

Abstract: This paper presents a practical method for the development of spectral reflectance libraries under sub-optimal sky conditions.\  Although there are commercially available spectrometers which simultaneously measure both downwelling and upwelling radiance to mitigate the impact of sub-optimal sky conditions, these spectrometers only record in the visible and near infra-red.\  There are presently no commercially available spectrometers with this capability that can record the visible through short-wave infra-red.\  This paper presents a practical method of recording and processing data using coordinated measurements from two full-range spectrometers and discusses potential pitfalls and solutions required to achieve accurate reflectance spectra.\  Results demonstrate that high-quality spectral reflectance libraries can be developed with this approach.

}, keywords = {Spectrometers and spectroscopic instrumentation, Spectroscopy}, url = {http://www.opticsinfobase.org/oe/home.cfm}, author = {Bachmann, Charles M and Montes, Marcos J and Christopher E Parrish and Fusina, Robert A and C. Reid Nichols and Rong-Rong Li and Eric Hallenborg and Christopher A. Jones and Krista Lee and Sellars, Jon and White, Stephen A and John C. Fry} } @proceedings {5124, title = {Linking goniometer measurements to hyperspectral and multi-sensor imagery for retrieval of beach properties and coastal characterization}, volume = {Vol. 8390}, year = {2012}, month = {April 23 - 27}, publisher = {SPIE}, address = {Baltimore, MD}, abstract = {

In June 2011, a multi-sensor airborne remote sensing campaign was flown at the Virginia Coast Reserve Long Term Ecological Research site with coordinated ground and water calibration and validation (cal/val) measurements. Remote sensing imagery acquired during the ten day exercise included hyperspectral imagery (CASI-1500), topographic LiDAR, and thermal infra-red imagery, all simultaneously from the same aircraft. Airborne synthetic aperture radar (SAR) data acquisition for a smaller subset of sites occurred in September 2011 (VCR\’11). Focus areas for VCR\’11 were properties of beaches and tidal flats and barrier island vegetation and, in the water column, shallow water bathymetry. On land, cal/val emphasized tidal flat and beach grain size distributions, density, moisture content, and other geotechnical properties such as shear and bearing strength (dynamic deflection modulus), which were related to hyperspectral BRDF measurements taken with the new NRL Goniometer for Outdoor Portable Hyperspectral Earth Reflectance (GOPHER). This builds on our earlier work at this site in 2007 related to beach properties and shallow water bathymetry. A priority for VCR\’11 was to collect and model relationships between hyperspectral imagery, acquired from the aircraft at a variety of different phase angles, and geotechnical properties of beaches and tidal flats. One aspect of this effort was a demonstration that sand density differences are observable and consistent in reflectance spectra from GOPHER data, in CASI hyperspectral imagery, as well as in hyperspectral goniometer measurements conducted in our laboratory after VCR\’11.

}, url = {http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1354567}, author = {Bachmann, Charles M and Gray, Deric and Abelev, Andrei and Philpot, William D and Montes, Marcos J and Fusina, Robert A and Musser, Joseph and Rong-Rong Li and Vermillion, Michael and Gabriel M Smith and Korwan, D and Snow, Charlotte and Miller, W. David and Gardner, Joan and Sletten, Mark and Georgiev, Georgi and Truitt, B and Kilmon, Marcus and Sellars, Jon and Woolard, J and Christopher E Parrish and Schwarzschild, A} } @proceedings {, title = {Geodatabase Development to Support Hyperspectral Imagery Exploitation}, year = {2010}, month = {Jul 25 - Oct 30}, address = {Honolulu, HI, USA}, keywords = {Optical Imagery}, author = {Fusina, Robert A and John C. Fry and Nichols, C R and Bachmann, Charles M and Rongxing Li and Sellars, Jon and Christopher E Parrish and Montes, Marcos J and Gross, C and White, Stephen A and Lee, K and Christopher A. Jones} } @article {, title = {Bathymetry Retrieval from Hyperspectral Imagery in the Very Shallow Water Limit: a Case Study from the 2007 Virginia Coast Reserve (VCR\’07) Multi-Sensor Campaign}, volume = {33}, number = {1}, year = {2010}, pages = {53-75}, publisher = {Taylor \& Francis}, keywords = {Optical Imagery}, author = {Bachmann, Charles M and Montes, Marcos J and Fusina, Robert A and Christopher E Parrish and Sellars, Jon and Weidemann, A and Goode, W and Nichols, C R and Woodward, P and McIlhany, K and Hill, V and Zimmerman, R and Korwan, D and Truitt, B and Schwarzschild, A} } @article {, title = {Retrieval of Substrate Bearing Strength from Hyperspectral Imagery during the Virginia Coast Reserve (VCR{\textquoteright}07) Multi-Sensor Campaign}, volume = {33}, number = {2}, year = {2010}, pages = {101-116}, publisher = {Taylor \& Francis}, keywords = {Optical Imagery}, author = {Bachmann, Charles M and Nichols, C R and Montes, Marcos J and Rongxing Li and Woodward, P and Fusina, Robert A and Chen, W and V Mishra and Kim, W and Monty, J and McIlhany, K and Kessler, K and Korwan, D and Millar, W D and Bennert, E and Gabriel M Smith and Gillis, D and Sellars, Jon and Christopher E Parrish and Schwarzschild, A and Truitt, B} } @article {, title = {Shoreline Mapping with Lidar and HSI-Derived Bathymetry}, year = {2008}, month = {Oct 7 - Oct 8}, address = {Silver Springs, MD, USA}, keywords = {LIDAR}, author = {Christopher E Parrish and Sellars, Jon and White, Stephen A and Bachmann, Charles M and Montes, Marcos J and Fusina, Robert A} } @proceedings {3198, title = {Very Shallow Water Bathymetry Retrieval from Hyperspectral Imagery at the Virginia Coast Reserve (VCR\’07) Multi-Sensor Campaign}, year = {2008}, month = {Jul 6 - Jul 11}, edition = {28th}, address = {Boston, MA, USA}, keywords = {Other}, author = {Bachmann, Charles M and Montes, Marcos J and Fusina, Robert A and Christopher E Parrish and Sellars, Jon and Weidemann, A and Goode, W and Hill, V and Zimmerman, R and Nichols, C R and Woodward, P and McIlhany, K and Korwan, D and Crawford, M and Monty, J and Truitt, B and Schwarzschild, A} }